isopachousadj.
/ʌɪsəʊˈpakəs//ʌɪˈsɒpəkəs/ Geology.
Depicting or pertaining to isopachs (sense 1); that is an isopach.
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the world > the earth > earth sciences > geography > map-making > map > [adjective] > line on map > geological features or phenomena
isacoustic1842
isoseismal1883
isopachous1913
isograde1924
isogradic1924
1913 Bull. U.S. Geol. Surv. No. 537. 89 (caption) Sketch map showing lines along which a coal bed is of equal thickness (isopachous lines), drawn for use in valuation of coal land.
1938 Bull. Amer. Assoc. Petroleum Geologists 22 425 (heading) Thinning of Devonian shown by isopachous lines.
1940 Bull. Amer. Assoc. Petroleum Geologists 24 2151 (heading) Isopachous studies in Michigan.
1968 Harbaugh & Merriam Computer Applications in Stratigr. Analysis v. 87/1 A thickness map (also termed an isopachous map)..portrays the interval between two stratigraphic horizons.
This entry has not yet been fully updated (first published 1976; most recently modified version published online June 2018).
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